Northern Territory Police and the NT Fire and Rescue Service are investigating a structure fire in Tiwi this morning.

Shortly after midnight, neighbours reported that a house on Kapalga Street was fully ablaze.

Firefighters attended and extinguished the flames. The building was unoccupied and there were no injuries.

Investigators are looking into the cause of the fire.

Anyone who witnessed the fire or who has information is asked to contact police on 131 444 or Crime Stoppers on 1800 333 000. Please quote reference 9715242.